Smashproof is a New Zealand hip hop group, consisting of Sid Diamond, Tyree, and Deach. The name "Smashproof" is a play on the word "Bulletproof". They are best known for the song "Brother", in which
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf07992358cf9d09ab626285737d3f3687d76236c7f64251086d6ccdc4c17da0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/936bfa71-2eeb-43e7-8a0c-37677f49db8a.json and https://artists.proofprofile.net/proofs/artist/936bfa71-2eeb-43e7-8a0c-37677f49db8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc42a21a3c0767a046cba3082a61be2ea90bcdd58d82af87adbded34edc7ddfb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT01308003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249ee1200187c6e64c8e00261f50c942071bc15193ee2f1fa628aa0de862f653. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT01308004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67777c9377bc0f9252148c4ceaef308fd8a0acb5610b69fe8c57d0dea9c7d383. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT01307401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3e78e6644068cbf06e6a7efa07a945241eb4ccafa464e976d3e0e940de578d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT01308001.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefa7fca107cf3e156868165243ab5787fee326480f020f488a87983d54cd33b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT01307801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16117eb705012e1de68ded58c0d131da659bd477262138b36d4917b55b814302. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT01307601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703877d30c2f1c6a66fb37bb8e06c38a495c8f148da2da475ae3fe084b3b7c19. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT01308002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a20ba4919512cdd6f5e32035293ffc07b3807efbbb05f8dcdb4c24a99b8282a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT00901802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3d1725efea1693a5a7f8b704ce36c321d91936b4f604f98f04281b26b1bed1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT00901806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7af1b070461506d63f46827139e0a23d06424896c150eb2cc4b766fd6e68eda. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT00901812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16f5e3e6bf68034d1eb19c3f3cb7503f68e8954f079a5daccbf40cb012b3887. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT01908697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f0f21e1e714edf6615b6cc4dbf8cae595773de0d6d3d2bb3be2b70adb6ba42. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT00901825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0890b1eac1b95441b90345dcb320546f72c585336a6baca901c887a20d73a72d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM71010586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e68337153bf18fa1f76f8350506032c07b722b3d3d81906b66f06ead598069. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT01708675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98226a5ee43cb27188c6e68e3c21608f6333fdc644a05af44cc2118d2f906d76. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHD0901916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc2609339be58f2aac16d797918a21bbf01665eb6ec6caa46d47673f78815d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHD0901917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eda785c0f9138bd50b437f6941e4bf7717e50d52410fb1b8bf325fe1d28e56b. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHD0901919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dd271516cc46002cdb3da8eef47bea228d812fad03cb5caf9ce6e347ad1085. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHD0901921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41727b3cf3f8843b34084b2eed31faadcc2fbc7433b67d4ad48aa94f79cca959. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHD0901927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf642fa735b14cdfb6e8013975e38f4e7dca5408f81b1b5c0222f50b0bb7048. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHD0901929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6ef7941ac4884cf84dca54a744e08b0138cd421b14569d1e50960ae207254c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHD0901931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a6f94971a249e1975920adc66975a8ce6de66eb3b82f489d284ff8dd6cb680. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHD0901936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0d3da40fddb92c8a7981364247394d9c74ba277f0c4090d999952a5c1d4595. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHD0901938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96b8663e675ae3c30c666111fe57718b522a914a5bfcdb0452b729075d7d160. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHD0901939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f911102625e67c8693a33817d36a9feb36abad21d1e2145e7f4b5fc1632447. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHS0901945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79138285a97458bab6a8b9424d9644e3e3bdc61dc799d735783da0f06ab53162. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBHD0901950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38116026144fb4be614edfdb8ec4acddab17527187a5ec03189c9033682f806a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT01240719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c3d1b5e1fd81cfce9205c2282fdec0bc45b1431890e971144c1312e646956c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZEP01704150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe2ca9f74e13d76fe5c28a63fcb902e1f3a9e667b22be9f5deb16120633fb01. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZEP01704130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe741514cf2820cc5de47418abf4d4c9e69040fac886b827e5e876b65bf18879d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZEP01604119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62401b118f66dd44e271bdd257c8c558230b1b032019227ef8289847a0e6b3c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZEP01704176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4171713723c66e49d486afa22e4381d23db9c01ef308b6a5184c31710d0c9295. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZEP01504109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb60bbb0d26510823cc4ac0fb9f2885789ef1938c04cc993b0f779a0e77eb65. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZEP01403905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4ada510e734f498d46f606234ff93d1f3b9ef9e89b9fd579fe1476064ec52c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT01608650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cace0c2d00c41fa2cbe0a1f1ad180f91610ec1e0442cf167b1f08e8e077d402. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZMT00600102.